I seem to recall Tom Ross saying that XMLSS is, in fact, generally slower than COMPAT. I believe the only advantage to XMLSS is that it can be offloaded to a specialty engine. So it will be slower but cost less (??). Or slower and cost more if you don't have a specialty engine!
Crazy, no? I'm sure Tom will correct me if I have misstated! Frank >________________________________ > From: "Farley, Peter x23353" <[email protected]> >To: [email protected] >Sent: Tuesday, March 18, 2014 3:40 PM >Subject: XMLSS performance vs COBOL 4.1 runtime XML > > >One of my co-workers is trying to improve the performance of an Enterprise 4.1 >program that decomposes an input XML file into record fields for processing by >later programs. The volume of the XML input has increased quite a bit and the >performance may soon impact SLA's. > >This program is currently compiled with XMLPARSE(COMPAT), so I advised him to >try compiling a test version with XMLPARSE(XMLSS) and run some production data >through both versions a few times to get some average performance numbers. > >The XMLSS version seems to be running about 10% more CPU utilization and >elapsed time than the production version, on average. > >Are there any tweaks or adjustments that can or should be made to the XMLSS >subsystem to improve performance? Our environment is z/OS V1 R12, z196 >hardware. > >Any RTFM would be most appreciated, since I can't make any such changes myself >but have to refer them to my systems programming group for consideration. > >Peter > >This message and any attachments are intended only for the use of the >addressee and may contain information that is privileged and confidential. If >the reader of the message is not the intended recipient or an authorized >representative of the intended recipient, you are hereby notified that any >dissemination of this communication is strictly prohibited. If you have >received this communication in error, please notify us immediately by e-mail >and delete the message and any attachments from your system. > >---------------------------------------------------------------------- >For IBM-MAIN subscribe / signoff / archive access instructions, >send email to [email protected] with the message: INFO IBM-MAIN > > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
